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Claude Code can use AI Gateway through the Anthropic-compatible API endpoint. Configure the base URL and API key before starting Claude Code.
Create or copy your API key from the console before configuring Claude Code.

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Configure Environment Variables

export ANTHROPIC_BASE_URL=https://llm.gpuhub.com/api/v1/anthropic
export ANTHROPIC_AUTH_TOKEN=$API_KEY
If you do not specify a model, Claude Code uses the default model configured by the gateway. You can also route Claude Code model aliases to a specific model. 
export ANTHROPIC_DEFAULT_HAIKU_MODEL=GLM-5
export ANTHROPIC_DEFAULT_SONNET_MODEL=GLM-5
export ANTHROPIC_DEFAULT_OPUS_MODEL=GLM-5

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Start Claude Code

After the environment variables are set, start Claude Code from your project directory. 
claude